Home / 12,715.23-17,555.21-8,179.94

Finding the Fourth Proportional to 12,715.23, 17,555.21 and 8,179.94

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Solution

The fourth proportional to 12,715.23, 17,555.21 and 8,179.94 is: 11,293.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.23 : 17,555.21 = 8,179.94 : x
  2. Step 2: Convert to fraction form
    12,715.23/17,555.21 = 8,179.94/x
  3. Step 3: Cross multiply
    12,715.23x = 17,555.21 × 8,179.94
  4. Step 4: Simplify right side
    12,715.23x = 143,600,545.41
  5. Step 5: Solve for x
    x = 143,600,545.41/12,715.23
  6. Step 6: Final answer
    x = 11,293.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.